src/share/vm/opto/loopopts.cpp

@@ -2255,10 +2255,14 @@
 //             v
 //           exitA
 //
 bool PhaseIdealLoop::partial_peel( IdealLoopTree *loop, Node_List &old_new ) {
 
+  if (!loop->_head->is_Loop()) {
+    return false; 
+  }
+
   LoopNode *head  = loop->_head->as_Loop();
 
   if (head->is_partial_peel_loop() || head->partial_peel_has_failed()) {
     return false;
   }